CN116943305A - Filter-pressing self-cleaning filtering method, device and storage medium - Google Patents
Filter-pressing self-cleaning filtering method, device and storage medium Download PDFInfo
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- CN116943305A CN116943305A CN202310925807.5A CN202310925807A CN116943305A CN 116943305 A CN116943305 A CN 116943305A CN 202310925807 A CN202310925807 A CN 202310925807A CN 116943305 A CN116943305 A CN 116943305A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 151
- 238000003825 pressing Methods 0.000 title claims abstract description 41
- 238000001914 filtration Methods 0.000 title claims abstract description 33
- 238000003860 storage Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 239000012535 impurity Substances 0.000 claims abstract description 43
- 239000007787 solid Substances 0.000 claims abstract description 43
- 239000002893 slag Substances 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 9
- 238000005189 flocculation Methods 0.000 claims description 6
- 230000016615 flocculation Effects 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000004220 aggregation Methods 0.000 claims description 5
- 238000005345 coagulation Methods 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010924 continuous production Methods 0.000 abstract description 4
- 239000002609 medium Substances 0.000 description 12
- 238000001514 detection method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a filter pressing type self-cleaning filtering method, a device and a storage medium, wherein the method comprises the steps of starting a driving mechanism arranged outside a first end of a self-cleaning filter when the internal and external pressure difference of the self-cleaning filter is monitored to reach a preset pressure difference; based on the cleaning piston pushed by the driving mechanism, solid impurities on the inner wall of the filter cylinder in the self-cleaning filter are scraped off; when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than the preset stroke, a slag discharging valve arranged at the outer side of the second end is started; and the solid impurities are discharged out of the slag discharge valve based on a cleaning piston pushed by the driving mechanism. The filter pressing type self-cleaning filtering method, the device and the storage medium can clean and squeeze the solid impurities trapped on the filter screen by a scraper; the cleaning treatment is carried out under the condition of continuous flow, normal production is not affected, and the continuous production is guaranteed.
Description
Technical Field
The invention relates to the field of mechanical filters, in particular to a filter pressing type self-cleaning filtering method, a device and a storage medium.
Background
The mechanical filter is an indispensable pipeline accessory in industrial production, and common mechanical filters can be classified into Y-type filters, T-type filters, basket filters, tubular filters and the like according to different structures. Such filters are mounted on pipes and utilize a screen to retain and separate solid impurities from the transport medium.
The filtering method in the prior art has good fluidity and high cleaning efficiency with less solid impurities; when encountering solid impurities with poor fluidity and high viscosity, such as viscous slurry, flocculation suspension and the like, a filter screen is extremely easy to be blocked; and can't utilize the liquid medium itself that waits to clean to carry solid impurity, needs artifical frequent washing, changes the filter screen, wastes time and energy and has certain occupational safety risk to operating personnel.
Therefore, how to realize the automatic cleaning of the filter screen when the self-cleaning filter works is a urgent problem to be solved.
Disclosure of Invention
In view of the above drawbacks of the prior art and limited application scope, the present invention aims to provide an automatic cleaning method for a filter screen during self-cleaning filter operation, which is used for solving the problem that the automatic cleaning of the filter screen during self-cleaning filter operation cannot be achieved in the prior art.
To achieve the above and other related objects, the present invention provides a filter-press type self-cleaning filtering method, comprising: when the internal and external pressure difference of the self-cleaning filter is monitored to reach a preset pressure difference, starting a driving mechanism arranged outside the first end of the self-cleaning filter; the cleaning piston is pushed by the driving mechanism to scrape off solid impurities on the inner wall of the filter cylinder in the self-cleaning filter and push the solid impurities to the second end of the self-cleaning filter; the cleaning piston comprises a floating scraper at a first end side in the self-cleaning filter; when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than the preset stroke, a slag discharging valve arranged at the outer side of the second end is started; and the solid impurities are discharged out of the slag discharge valve based on a cleaning piston pushed by the driving mechanism.
In one embodiment of the invention, the cleaning piston is connected to a component in the drive mechanism by a piston rod; and the pushing position and direction are positioned based on a guide barrel arranged at the first end side in the self-cleaning filter.
In one embodiment of the present invention, a cleaning piston includes: the device comprises a guide pressing plate, a guide ring, a piston body, a floating scraper and a knife ring pressing plate; the guide pressing plate is connected with the guide ring and is jointly arranged on the first part of the piston body; the knife ring pressing plate is connected with the floating scraper and is jointly arranged on the second part of the piston body; the first part and the second part are connected through a hollow cylinder to form a dumbbell-shaped structure; the side wall of the guide barrel is provided with M windows for inflow of liquid to be cleaned; m is an integer greater than 1.
In one embodiment of the invention, the first part of the piston body is provided with a balance hole; the second part of the piston body is provided with a filter hole; the diameter of the balance hole is larger than that of the filter hole; a hollow cylinder above the first portion for sequentially passing through the guide ring, the guide platen; and is matched with a bolt on the guide pressing plate and fixedly installed; the second part of the piston body is also provided with a screw hole; is used for being corresponding to the bolts on the knife ring pressing plate and being fixedly installed.
In an embodiment of the present invention, before the slag discharging valve installed outside the second end is started when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than the preset stroke, the method further includes: when the driving mechanism pushes the cleaning piston to push the solid impurities to the second end, the driving mechanism drives the cleaning piston reversely, the cleaning piston is pulled to retract into the guide barrel, and the set press filtration times are reduced by 1; repeating the operation until the press filtration times are 0.
In one embodiment of the present invention, the media characteristics of the liquid to be cleaned include, but are not limited to: slurry, flocculation, self-coagulation, self-aggregation; based on the media properties, the diameter and number of circular holes in the sidewall of the filter cartridge are determined.
In one embodiment of the invention, the number of press passes is determined based on correspondence with the media properties.
Correspondingly, the invention provides a filter-pressing type self-cleaning filter device, which comprises: the starting module is used for starting a driving mechanism arranged at the outer side of the first end of the self-cleaning filter when the internal and external pressure difference of the self-cleaning filter reaches a preset pressure difference; the first processing module is used for scraping solid impurities on the inner wall of the filter cylinder in the self-cleaning filter based on the cleaning piston pushed by the driving mechanism and pushing the solid impurities to the second end of the self-cleaning filter; the cleaning piston comprises a floating scraper at a first end side in the self-cleaning filter; the second processing module is used for starting a slag discharge valve arranged outside the second end when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than the preset stroke; and the solid impurities are discharged out of the slag discharge valve based on a cleaning piston pushed by the driving mechanism.
In one embodiment of the invention, the cleaning piston is connected to a component in the drive mechanism by a piston rod; and the pushing position and direction are positioned based on a guide barrel arranged at the first end side in the self-cleaning filter.
The present invention provides a storage medium having stored thereon a computer program which when executed by a processor implements the filter press self-cleaning filtration method described above.
As described above, the invention provides a filter pressing type self-cleaning filtering method, a device and a storage medium, which have the following beneficial effects:
(1) The scraper cleaning and the squeezing filtration can be carried out on the solid impurities trapped on the filter screen;
(2) The liquid with various medium properties including but not limited to slurry, flocculation, self-coagulation and self-aggregation properties can be cleaned and treated under the condition of continuous flow, normal production is not affected, and continuous production is guaranteed.
(3) Automatic operation processing reduces manual cleaning dependence, reduces cost and improves operation efficiency.
Drawings
FIG. 1 is a flow chart of a press-filter type self-cleaning filtration method according to an embodiment of the invention.
FIG. 2 is a schematic diagram of a cleaning piston in an embodiment of a filter-press self-cleaning filtration method according to the present invention.
FIG. 3 is a schematic diagram showing an example of a filter-press self-cleaning filter method according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a press-filter type self-cleaning filter device according to an embodiment of the invention.
Description of element reference numerals
1. Cleaning piston
11. Guide pressing plate
12. Guide ring
13. Piston body
131. Balance hole
132. Filter hole
14. Floating scraper
15. Knife ring pressing plate
2. Guiding barrel
3. Piston rod
4. Filter cartridge
5. Driving mechanism
6. Driving support
7. Packing gland
8. Top cover
9. Shell body
10. Filler set
11. Slag discharging valve
12. Slag discharging pipe
41. Start module
42. First processing module
43. Second processing module
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The filter pressing type self-cleaning filtering method, the device and the storage medium can clean and squeeze the solid impurities trapped on the filter screen by a scraper; the liquid with various medium properties can be cleaned and treated under the condition of continuous flow, including but not limited to slurry, flocculation, self-coagulation and self-aggregation properties, normal production is not affected, and guarantee is provided for continuous production; and the automatic operation treatment reduces the dependence of manual cleaning, reduces the cost and improves the working efficiency.
As shown in fig. 1, in an embodiment, the press filtration type self-cleaning filtration method of the present invention comprises the following steps:
and S1, when the pressure difference between the inside and the outside of the self-cleaning filter reaches a preset pressure difference, starting a driving mechanism arranged on the outer side of the first end of the self-cleaning filter.
Specifically, the main body of the self-cleaning filter is a shell, the inner part of the shell is an upper cavity and a lower cavity, a guide barrel is arranged in the upper cavity, and a filter cartridge is arranged in the lower cavity; the lateral wall in upper chamber and lower chamber is equipped with pressure detection mouth before straining and strained pressure detection mouth respectively, differential pressure detection based on differential pressure instrument such as differential pressure transmitter that these two detection mouthfuls of setting, get the pressure monitoring and self-cleaning filter is interior to inside and outside the cartridge filter pressure, judge the inside degree of jam of filter-pressing formula self-cleaning filter and whether need clean according to the pressure differential, and be equipped with the import of treating clean liquid at the lateral wall in upper chamber, the lateral wall in lower chamber is equipped with the export of having cleaned liquid, can set up automatic control valve in import department and be used for controlling the circulation interruption of treating clean liquid in the production process.
When the self-cleaning filter works normally, firstly, a control valve at the inlet of the shell is opened, liquid to be cleaned enters the upper cavity of the shell through the inlet of the shell, flows through a window formed in the side wall of the guide barrel into the guide barrel, flows into a filter barrel in the lower cavity of the shell, and except that solid impurities larger than round holes in the side wall of the filter barrel are intercepted in the filter barrel, most of liquid to be cleaned is converted into cleaned liquid through filtration and flows out from an outlet of the lower cavity. After a period of production operation, a large amount of solid impurities are intercepted in the filter cartridge, so that a large number of round holes on the side wall are blocked, and the filtration efficiency is reduced. When the internal and external pressure difference of the self-cleaning filter is detected to reach the preset pressure difference, a driving mechanism arranged outside the first end of the self-cleaning filter is started.
S2, scraping solid impurities on the inner wall of a filter cylinder in the self-cleaning filter based on a cleaning piston pushed by a driving mechanism, and pushing the solid impurities to a second end of the self-cleaning filter; the cleaning piston comprises a floating scraper at a first end side within the self-cleaning filter.
Specifically, the cleaning piston is connected with components in the driving mechanism through a piston rod; and the pushing position and direction are positioned based on a guide barrel arranged at the first end side in the self-cleaning filter. As shown in fig. 2, in the present embodiment, a cleaning piston of the present invention includes: the device comprises a guide pressing plate, a guide ring, a piston body, a floating scraper and a knife ring pressing plate; the guide pressing plate is connected with the guide ring and is jointly arranged on the first part of the piston body; the knife ring pressing plate is connected with the floating scraper and is jointly arranged on the second part of the piston body; the first part and the second part are connected through a hollow cylinder to form a dumbbell-shaped structure; the side wall of the guide barrel is provided with M windows for inflow of liquid to be cleaned; m is an integer greater than 1. The first part of the piston body is provided with a balance hole; the second part of the piston body is provided with a filter hole; the diameter of the balance hole is larger than that of the filter hole; a hollow cylinder above the first portion for sequentially passing through the guide ring, the guide platen; and is matched with a bolt on the guide pressing plate and fixedly installed; the second part of the piston body is also provided with a screw hole; is used for being corresponding to the bolts on the knife ring pressing plate and being fixedly installed.
As shown in fig. 3, in this embodiment, after the driving mechanism is started, the driving mechanism pushes the cleaning piston to move towards the second end of the self-cleaning filter through the piston rod, the cleaning piston enters the filter cartridge under the guidance of the guiding barrel, the floating scraper scrapes the solid impurities accumulated on the inner wall of the filter cartridge section by section, and pushes the solid impurities to be accumulated towards the second end direction, so that the circular holes on the side wall of the filter cartridge recover to circulate again, and at this time, the monitored pressure difference is gradually recovered.
For example, the driving mechanism is mounted at a first end of the driving bracket; the driving mechanism inner part is connected with the second end of the piston rod; the driving mechanism is used for pushing the piston rod so as to push the cleaning piston; the driving mechanism provides power for the cleaning piston; the driving mechanism can select different forms of air cylinders, electric push rods, electro-hydraulic push rods and the like according to different working conditions to implement automatic control, and the invention is not limited. The second end of the driving bracket is connected with the first end of the top cover; the driving support is made of metal through welding or casting, is fixedly installed on the first end and the driving mechanism through bolts, nuts, gaskets and the like, and is fixedly installed on the second end and the top cover. The first end of the top cover is provided with a stuffing box, and the stuffing gland is pressed into the stuffing box and compresses the stuffing group to provide guiding of the piston rod and dynamic sealing between the piston rod and the top cover; the packing gland comprises a metal material, a dust ring and a sealing ring; the packing group comprises a hollow guide ring and a hollow flexible plastic packing ring; an opening is arranged in the middle of the top cover and used for the passage of the piston rod; the second end of the top cover is connected with the first end of the shell and is simultaneously connected with the first end of the guide barrel so as to fix the guide barrel.
Step S3, when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than a preset stroke, starting a slag discharge valve arranged on the outer side of the second end; and the solid impurities are discharged out of the slag discharge valve based on a cleaning piston pushed by the driving mechanism.
Specifically, when solid impurities accumulate more at the second end, the pushing stroke of the driving mechanism pushing the cleaning piston to move towards the second end is reduced, when the pushing stroke is smaller than the preset stroke, accumulated solid impurities possibly influence the outflow of the cleaned liquid at the outlet, at the moment, the slag discharging valve at the outer side of the second end is started, the control valve at the inlet of the shell can be closed, the driving mechanism drives the piston rod to push the cleaning piston, the cleaning piston is pushed to the filter cartridge from the guide barrel, the solid impurities are automatically discharged out of the self-cleaning filter through the opened slag discharging valve and the slag discharging pipe, the cleaning piston is automatically reset again, the slag discharging valve is automatically closed, the control valve at the inlet of the shell is opened, circulation of a medium to be cleaned is recovered, and the self-cleaning filter can continue to work. For example, the first end of the slag discharge valve is connected with the second end of the shell; the second end of the slag discharging valve is connected with the slag discharging pipe and is used for filtering and pressing the cleaning piston to the solid impurities at the bottom of the filter cylinder through the cleaning piston and discharging the solid impurities out of the shell. The slag discharging pipe consists of flange and pipe and is used for guiding slag to solid impurity, and its length is determined by the position of filter-pressing self-cleaning filter and the position of slag tray or slag barrel for receiving solid impurity. The slag discharging valve comprises a knife-type gate valve, a disc valve, a plug valve, a spiral cover valve and the like.
Further specifically, in the initial state, the valve at the inlet of the housing is closed, the slag discharging valve is closed, and the driving mechanism retracts the cleaning piston to the top of the first end side guide barrel through the piston rod.
Further specifically, when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than the preset stroke, before the slag discharging valve installed outside the second end is started, the method further comprises: when the driving mechanism pushes the cleaning piston to push the solid impurities to the second end, the driving mechanism drives the cleaning piston reversely, the cleaning piston is pulled to retract into the guide barrel, and the set press filtration times are reduced by 1; repeating the operation until the press filtration times are 0.
For example, after the cleaning piston applies a certain pressure to compact the solid impurities, the driving mechanism drives the piston rod to move reversely, so that the piston rod is pulled to move reversely to retract into the guide barrel, and the original position is restored, at the moment, since the solid impurities on the inner wall of the filter barrel are scraped and pushed to the slag discharging valve direction, namely the bottom of the filter barrel, a large number of blocked round holes of the filter barrel are restored to circulation again; the filter pressing frequency is reduced by 1; the filter pressing times are determined based on the corresponding relation with the properties of the medium; the operation was repeated until the number of press passes was 0.
Further specifically, the media characteristics of the liquid to be cleaned include, but are not limited to: slurry, flocculation, self-coagulation, self-aggregation; based on the media properties, the diameter and number of circular holes in the sidewall of the filter cartridge are determined.
As shown in fig. 4, in an embodiment, the filter-pressing self-cleaning filter device of the present invention comprises:
a starting module 41 for starting a driving mechanism installed outside the first end of the self-cleaning filter when the internal and external pressure difference of the self-cleaning filter is monitored to reach a preset pressure difference;
the first processing module 42 is used for scraping solid impurities on the inner wall of the filter cylinder in the self-cleaning filter based on the cleaning piston pushed by the driving mechanism and pushing the solid impurities to the second end of the self-cleaning filter; the cleaning piston comprises a floating scraper at a first end side in the self-cleaning filter;
a second processing module 43 for starting a slag discharging valve installed at the outer side of the second end when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than the preset stroke; and the solid impurities are discharged out of the slag discharge valve based on a cleaning piston pushed by the driving mechanism.
The specific technical features of the filter-pressing self-cleaning filter device in this embodiment are basically the same as the principle of each step in the filter-pressing self-cleaning filter method in embodiment 1, and the general technical content between the method and the device is not repeated.
The storage medium of the present invention stores a computer program which, when executed by a processor, implements the filter-press self-cleaning filtration method described above.
In conclusion, the filter pressing type self-cleaning filtering method, the device and the storage medium can clean and squeeze the solid impurities trapped on the filter screen by a scraper; the continuous cleaning treatment can be carried out under the condition of continuous flow, normal production is not affected, and the continuous production is ensured; and the automatic operation treatment is adopted, so that the dependence of manual cleaning is reduced, the cost is reduced, and the operation efficiency is improved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A filter-press self-cleaning filtration method, comprising:
when the internal and external pressure difference of the self-cleaning filter is monitored to reach a preset pressure difference, starting a driving mechanism arranged on the outer side of the first end of the self-cleaning filter;
based on the cleaning piston pushed by the driving mechanism, solid impurities on the inner wall of the filter cylinder in the self-cleaning filter are scraped off and pushed to the second end of the self-cleaning filter; the cleaning piston comprises a floating scraper at a first end side within the self-cleaning filter;
when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than a preset stroke, a slag discharging valve arranged outside the second end is started; and discharging the solid impurities out of the slag discharge valve based on the cleaning piston pushed by the driving mechanism.
2. The filter press self-cleaning filtration method according to claim 1, wherein the cleaning piston is connected to components within the drive mechanism by a piston rod; and positioning the pushing position and direction based on a guide barrel installed at the first end side in the self-cleaning filter.
3. The filter-press self-cleaning filtration method according to claim 2, wherein the cleaning piston comprises: the device comprises a guide pressing plate, a guide ring, a piston body, a floating scraper and a knife ring pressing plate; the guide pressing plate is connected with the guide ring and is jointly arranged on the first part of the piston body; the knife ring pressing plate is connected with the floating scraper and is jointly arranged on the second part of the piston body; the first part and the second part are connected through a hollow cylinder to form a dumbbell-shaped structure;
the side wall of the guide barrel is provided with M windows for inflow of liquid to be cleaned; and M is an integer greater than 1.
4. The filter-press self-cleaning filtration method according to claim 3, wherein a balance hole is provided on the first portion of the piston body; the second part of the piston body is provided with a filter hole; the diameter of the balance hole is larger than that of the filter hole;
the hollow cylinder above the first part is used for sequentially passing through the guide ring and the guide pressing plate; and the guide pressing plate is matched with a bolt on the guide pressing plate and is fixedly installed;
the second part of the piston body is also provided with a screw hole; and the cutter ring pressing plate is used for being fixedly installed corresponding to the bolts on the cutter ring pressing plate.
5. The filter-press self-cleaning filtration method according to claim 3, wherein when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than a preset stroke, before the slag discharge valve installed outside the second end is started, further comprising:
when the driving mechanism pushes the cleaning piston to push the solid impurities to the second end, the driving mechanism drives the cleaning piston reversely, the cleaning piston is pulled to retract into the guide barrel, and the set press filtration times are reduced by 1; repeating the operation until the number of times of filter pressing is 0.
6. The filter-press self-cleaning filtration method according to claim 5, wherein the media properties of the liquid to be cleaned include, but are not limited to: slurry, flocculation, self-coagulation, self-aggregation; and determining the diameter and the number of round holes on the side wall of the filter cartridge based on the media property.
7. The filter-press self-cleaning filtration method according to claim 6, wherein the number of filter presses is determined based on a correspondence with the media property.
8. A filter-press self-cleaning filter device, comprising:
the starting module is used for starting a driving mechanism arranged at the outer side of the first end of the self-cleaning filter when the internal and external pressure difference of the self-cleaning filter is monitored to reach a preset pressure difference;
the first processing module is used for scraping solid impurities on the inner wall of the filter cylinder in the self-cleaning filter based on the cleaning piston pushed by the driving mechanism and pushing the solid impurities to the second end of the self-cleaning filter; the cleaning piston comprises a floating scraper at a first end side within the self-cleaning filter;
the second processing module is used for starting a slag discharge valve arranged outside the second end when the pushing stroke of the cleaning piston pushed by the driving mechanism is smaller than a preset stroke; and discharging the solid impurities out of the slag discharge valve based on the cleaning piston pushed by the driving mechanism.
9. The filter-press self-cleaning filter device according to claim 8, wherein the cleaning piston is connected to components within the drive mechanism by a piston rod; and positioning the pushing position and direction based on a guide barrel installed at the first end side in the self-cleaning filter.
10. A storage medium storing program instructions which, when executed, implement the steps of the filter press self-cleaning filtration method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310925807.5A CN116943305A (en) | 2023-07-25 | 2023-07-25 | Filter-pressing self-cleaning filtering method, device and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310925807.5A CN116943305A (en) | 2023-07-25 | 2023-07-25 | Filter-pressing self-cleaning filtering method, device and storage medium |
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| Publication Number | Publication Date |
|---|---|
| CN116943305A true CN116943305A (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310925807.5A Pending CN116943305A (en) | 2023-07-25 | 2023-07-25 | Filter-pressing self-cleaning filtering method, device and storage medium |
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| CN (1) | CN116943305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117619023A (en) * | 2024-01-25 | 2024-03-01 | 烟台欧冠粉末设备有限公司 | Powder coating bonding blendor filter core ventilation type structure |
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2023
- 2023-07-25 CN CN202310925807.5A patent/CN116943305A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117619023A (en) * | 2024-01-25 | 2024-03-01 | 烟台欧冠粉末设备有限公司 | Powder coating bonding blendor filter core ventilation type structure |
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